Machine for packing stuffing-boxes.



P.. R. STIRLING. MGHINE POR PACKING STUPI'ING BOXES.

APPLICATION FILED JULY 27. 1907.

Patented Jan. 26, 1909.

SHEETS-SHEET 1.

R. B.. STIRLING. MACHINE PoR PACKING STUFHNG BOXES. APPLIGATION FILED JULY 27. 1907.

Patented Jan. 26, 1909.

2 SHEETS-SHEET 2.

h ha; IOMA? QN Ll n H nmw @@QQQQQQQ@ a uw m m ROBERT R. STIRLING, OF BAYONNE, NEW JERSEY.

MACHINE F01?. PACKING STFFING-BOXES.

Specification o Letters Patent.

Patented Jan. 26, 1909.

Application filed July 27, 1907. Serial No. 385,788.

To all whom it may concern.'

Be it known that I, ROBERT R. STIRLING, a citizen of the United States, and a resident of Bayonne, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Machines for Packing Stufling-Boxes, of which the following is a specification.

This invention relates to a machine or device for packing stulng boxes. Its organization consists essentially of a hammer tube, having connected therewith a cam which actuates a hammer that is caused to impinge against or strike a blow against said cam, and thereby force the hammer tube against packing in a stufling box.

Figure 1 represents a side view of the invention, Fig. 2 shows a top view of Fig. 1 with a portion thereof broken away, and a sectional view of a condenser head and the lacing therefor, Fig. 3 is a partial view similar to Fig. 2 with the elements in a changed position, Fig. 4 represents a partial top view of Fig. 1, Fig. 5 is a section of Fig. 4 on the line 5, 5, Fig. 6 represents a section of Fig. 1 on the line 6, 6, Fig. 7 is a section of Fig. 2 on the line 7, 7, Figs. 8 and 3a show enlarged sections of Fig. 2 on the line 8, 8, Fig. 9 shows a section of Fig. 8 on the line 9, 9 Fig. 10 is a plan view of a detail.

The invention is shown with a hammer tube 20, into which is snugly fitted the slidable sleeve 21, and to the latter is secured the centering piece 22, having an enlarged portion 23 with the inner shoulder 24 and outer shoulder 25. The shoulder 24 abuts against the edge of the sleeve 21, and it will be noted both said centering piece 22 and sleeve 21 could be made of one piece. From the outer shoulder 25 extends the conical centering tip 26. The hammer tube 2O has formed therein the helical guide slot 30, one edge of which bears against a pin 3l extending from the centering piece 22, and the other edge of the slot bears against a guide hook 32 extending from said centering piece 22. The open ends of the slot 30 are curved as shown at 37, 3S.

A rotary guide roller 33 flared toward its central portion 39 is ournaled on the hainmer tube 20, between collars 34 and 35 fastened to said hammer tube. A guide hook 36 extends from the collar 35 and is located opposite the inner or upper end of the slot 30.

A spindle 40 extends from the centering piece 22. It engages and passes through a guide collar 41 which is fastened to the hammer tube 20 by means of a screw 42, the latter also securing to the outer cylindrical surface of the hammer tube the driven spur gear 43. A spring 44 bears between the guide collar 41 and the centering piece 22, a screw 45 engaging a threaded opening in the end of the spindle 40 outside of the guide collar 41. The spring 44 tends to force the outer end of the centering piece out of the hammer tube 20. A motor hub 46 is ournaled on the hammer tube 26, having formed therewith a gear 47 and a blade web 43. The motor hub is located in the cavity 49 of the member 5l of an air motor, and rollers 50 are located on said hub. The member 51 has an exhaust opening 55, over which is fastened a screen 56, by means of a cover plate 59 with an opening 60, the cover plate 59 being held in place by screws 57. The member 51 has extending therefrom a plug with the threads 76 and channel 77 in which latter is formed a valve seat 52. A valve 53 having a port 54 is located on said seat. A spindle 61 extends from the valve and passes through an opening in the boss 62 extending from the member 51. A knob 63 is fastened to the spindle 61 and a spring 64 surrounds the spindle 61 and bears between the lxnob 63 and the face of the boss 62. A pin 83 extends from the valve 53 and engages a slot 89 in the seat 52.

A second member 65 of the motor casing is secured to the member 51, by means of the screws 66, an annular chamber 67 being formed with the casings for blades 68 that extend from web 48. A housing 69 is fastened to the member 65. It has a spline 70 extending from its inner surface, and at its outer end is secured a ball bearing support 71 for the ball bearings 72.

To the end of the hammer tube 20 is fastened a bearing 73 with an annular groove 74 for the ball bearings 72. The bearing 73 is fastened to the hammer tube 20 by means of the pin 75.

A hammer 30 is slidably supported on the hammer tube 20. The hammer has a housing 81 for the spring 82, that bears between the roof 83 of the housing 81 and the support 71. In the housing 81 is formed a slot 84 which engages the spline 70. From one end of the hammer 80 extends a pin 85 on which is journaled a cam roller 36.

A tubular cam 90 with the inner annular bearing face 91, has a gradually rising edge! 92 for about half its circumference, and then a precipitating wall 93. A boss 94 ot the said cam is fastened to the hammer tube 20 by means of the pin 95. Roller bearings 96 extend between the end face of the boss 94 and a groove 97 formed in the member 65 of the air motor.

A pin 98 extends from the member 51 of" the motor and on it is journaled the connected gear and pinion 99 and 100. The gear43 meshes with pinion 100 and the gear 99 meshes with the pinion 47. A dust cover 101 extends from the member 51 over the train o'lgears.

To operate the invention, piping, pret'- erably flexible, not shown, is connected with the plug having the threads 76, and lacings 102 are cut to the proper length, and one at l a time is wound around the enlarged portion 23 of the centering piece 22 with a couple of wraps. rlhen the loose end ol' the lacing is placed under the guide hook 32 and the guide hook 36, locating a portion ot' the lacing in the slot 30 which latter is somewhat larger than the lacing. From the guide hook 36 the lacing leads around the guide roller 33. 'l'he machine is then placed in position with its conical tip 26 inserted in the tube 103 l around whichl the lacing which is to constitute the packing is to be placed, as shown in Fig. 2r. rlhen the operator l'orces the lacing into the stuiling box 104 to be iilled, i by causing the shoulder 25 to bear against the end ol the tube 103, when the hammer l tube with the lacing thereon can be pushed into the stuihngbox over said condenser tube. rlhe yielding of the spring 44 allows the hammer tube 20 to slip over the centerl ing piece 22, and thereby the wraps oi the lacing are forced to the bottom ol the stuffing y box 104. While the wraps ol' lacing are 1 bei-ngpushedf-inplace an appropriate length l of the same is led from the'guide roller 33. The guide pin 31 bears against the guide slot 30 ol the hammer tube so as to always locate i the hook 32 in proper position over said slot, l tol maintain a portion oi the lacing in said slot. When the hammer tube forces the i Wraps of lacing from the centering piece into the stufling box, the said centering piece` turns relatively to said tube, by reason oi the engagement ol' the hook 32 and pin 31 with f the slot 30. The operator now pushes the knob 63 of the valve 53 and air is forced against the blades 68 of the motor, which causes the motor hub Zi6 with the gear 47 to rotate. The gear 47 meshing with the pinion 99 on the pin 98 and the pinion 100 meshing with the gear 43, the hammer tube 2O is causedv to rotate. The hammer is prel vented from rotating by virtue of the enl gagement of the spline with the slot 84 in the housing 81. As the cam 90 rotates the roller 86 rides on the edge ofthe same and when the said roller leaves the highest point of the said cam, and engages with the precipitating wall 93 the spring 82 forces the end surfaces 106 of the hammer against the inner face 91 of the cam 90, which causes the hammer tube to strike a blow against the lacing. As the hammer tube is revolved the housing 69 remaining stationary, and the lacing is wound into the stuiling box by unwinding from the guide roller 33 and being blow from the hammer for each revolution o'l' the hammer tube.

An air motor is shown with the drawings, but it is eviden-t that other means may be employed to rotate the hammer tube.

lt will be noted that a portion of the invention namely the ham-mer tube 20- with its appurtenances could be used without the motor and the hammer, and that other means might be provided to rotate the said hammer tube and impart blows thereto.

Having described my invention, 1 clair .Y

1. ln a machine for acking stuliing boxes the combination of a ammer tube having a slot in the end thereof, a slidable centering piece therein, resilient means between the hammer tube and the centering piece, a hook extending Vupv from the centering piece' through the slot in the hammer tube, andV a second hook adjacent to the inner end of said slot' extending up from said tube.

2. In a machine tor packing stuffing boxes the combination of a rotary hammer tube having a slot in the end thereof, a slidable centering piece therein, resilient means between the hammer tube and the centering piece, a hook extending up Jfrom the Ycentering piece through the slot in th hammer tube,v a second hook adJ acent to the inner end ot said slot extending up from the hammer tube, and means to rotate the hammer tube and impart a blow thereto.

3. In a machine lor packing stuffing boxes the combination oi a rotary hammer tube having a slot in the end thereof, a slidable i led through the slot 30. The gearing is pro- Y portioned so that the lacing receives one centering piece therein and extending out et the end thereof, a hook extending from the centering piece through the said slot, a second hook extending Jfrom the hammer tube, the hooks located so as that a lacing wound around the end of the centering piece can be led through said slot, means to rotate the hammer tube and the centering piece, a ham.- mer in the machine and means to cause the hammer to impart a blow to said hammer tube.

4. In a machine for-packing'stufhng boxes the combination of a rotary hammer tube having a slot in the end thereof, a slidable centering piece therein and extendingy out of the end thereof, a hook extending from the centering piece through the said slot, a secthe hooks located so that a lacing wound around the end of the centering piece can be led through said slot, means to rotate the hammer tube and the cen-tering piece, a hammer slidably supported on the hammer tube, a cam secured to the hammer tube and located to engage with said hammer, a spring bearing against said hammer to force it toward said cam.

5. In a machine for packing stuffing boxes the combination of a rotary hammer tube having a slot in one end thereof, a slidable centering piece therein and extending out of one end thereof, a collar secured in the hammer tube, a spindle extending from the centering piece and assing through said collar, a spring bearing etween the collar and the centering piece, means to limit the distance between the collar and centering piece, a hook extending from the centering piece through said slot, a second hook extending from the hammer tube opposite the inner end of said slot, a guide roller on the hammer tube to feed a lacing through the guide hooks, the slot and around the centering piece, means to rotate the hammer tube and centering piece, and means to impart a blow to said hammer tube.

6. In a machine for packing stuffing boxes the combination of a rotary hammer tube having a slot in one end thereof, a slidable centering piece therein and extending out of one end thereof, a collar secured in the hammer tube, a spindle extending from the centering piece and passing through said collar, a spring bearing between the collar and the centering piece, means to limit the distance between the collar and centering piece, a hook extending from the centering piece through said slot, a second hook extending from the hammer tube opposite the inner end of said slot, a guide roller on the hammer tube to feed a lacing through the guide hooks, the slot and around the centering piece, a gear fastened to the hammer tube, a motor supported on the hammer tube, connections between said gear and motor, a hammer slidably supported on the hammer tube, a cam fastened to the hammer tube bearing against the hammer, a spring bearing against the hammer and tending to force the same against said cam.

7. rl`he combination of a hammer tube having a helical slot in one end thereof, a centering piece slidably supported therein, a spring connected up with the hammer tube to bear against the centering piece to force the end thereof out of the hammer tube, a

tubular cam secured to the hammer tube, a hammer slidably supported on the hammer tube, a roller journaled to the hammer and located to engage with the edge of the cam, a housing extending from the hammer, a second housing over the cam and hammer, a bearing support fastened to one end of the latter housing, aspring in the housing of the hammer and bearing between the roof thereof and said support.

8.l The cumbinatioii of a hammer tube having a helical guide slot in the end thereof, a centering' piece s'lidablj,TV and partially4 rotatably supported in said tube, a collar secured in the tube, a spindle extending from the centering piece and passing through an opening in said collar, a screw in the end of said spindle to bear against said collar, a spring bearing between the collar and centering piece, a motor supported on the hammer tube, a motor hub journaled on the hammer tube in the said motor, a gear fastened to the hammer tube, gearing between the motor hub and the gear on the hammer tube, a housing extending from the motor, a ball bearing support on the end of the housing, a cam in the ousing fastened to the hammer tube, ball bearings between the end face of the cam and the motor, a hammer slidably supported on the hammer tube, a roller journaled on the hammer and located to bear on the cam, a spring bearing between the hammer and the support on the end of the housing, ball bearings between the said support and the end of the hammer tube adjacent thereto, ball bearings between the cam and the motor.

9. The combination of a hammer tube having a helical guide slot in the outer end thereof, a centering piece slidably and partially rotatably supported in said tube, a collar having an opening fastened in said tube, a spindle extending from the centering piece and passing through the opening in said collar, a screw in the end of said spindle to bear against said collar, a spring bearing between the collar and said centering piece, a motor hub journaled on the hammer tube, one member of an air motor over said motor hub, roller bearings between the said hub and member, a second member of the air motor secured to the first member and encircling the hammer tube, the two members forming an annular space between them, a blade web extending from the motor hub, blades extending from said web in the said annular space, a plug having a channel for a hose connection extending from the said motor, a valve in said channel, and an exhaust opening in one of the members of the motor, a gear formed with the motor hub, a combined pinion and gear journaled on one of the members of the motor, the latter gear meshing with the gear on the motor hub, a gear fastened to the hammer tube in mesh with the pinion of the combined pinion and gear, a guide roller on the hammer tube, to feed lacing through the slot in the said hammer tube and around the tube to be packed, a housing extending from the air motor, a support at the end of the housing, a tubular cam in said housing fastened to the hammer tube, a hammer slidably supported n the Signed at the borough of Manhattan n the hammer tube, a roller journaled on the hamcounty of New York and State of New York 1G mei` engaged wilh ltlhe edge of the cam,han this 24th day of July A. D. 1907.

en surface ont e ammer en aGfin wit a bearing surface of the cam durgn agporton Y ROBERT R' STIRLING' o1 the rotation of the hammer tube, and a Witnesses:

spring between the hammer and the support MARTIN ZIMANSKY,

at the end of the housing. M. H. COOK. 

